128033218064 has 20 divisors (see below), whose sum is σ = 250259623356. Its totient is φ = 63450089472.

The previous prime is 128033218063. The next prime is 128033218121. The reversal of 128033218064 is 460812330821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7040552464 + 120992665600 = 83908^2 + 347840^2 .

It is not an unprimeable number, because it can be changed into a prime (128033218063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35405609 + ... + 35409224.

Almost surely, 2^128033218064 is an apocalyptic number.

It is an amenable number.

128033218064 is a deficient number, since it is larger than the sum of its proper divisors (122226405292).

128033218064 is a wasteful number, since it uses less digits than its factorization.

128033218064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70814954 (or 70814948 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

Adding to 128033218064 its reverse (460812330821), we get a palindrome (588845548885).

The spelling of 128033218064 in words is "one hundred twenty-eight billion, thirty-three million, two hundred eighteen thousand, sixty-four".